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<p class="MsoNormal">Subsetting of a font has *<b>ZERO</b>* impact on the ability to extract text from a PDF…provided that you are following the rules for text extraction in ISO 32000 (PDF standard) vs. doing something like “grep”.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Leonard<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">poppler <poppler-bounces@lists.freedesktop.org> on behalf of William Bader <williambader@hotmail.com><br>
<b>Date: </b>Wednesday, July 1, 2020 at 2:18 AM<br>
<b>To: </b>"poppler@lists.freedesktop.org" <poppler@lists.freedesktop.org><br>
<b>Subject: </b>[poppler] pdftops font subset question<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">Is there any way to prevent pdftops from subsetting fonts? I want to be able to convert the ps back to a PDF and still be able to extract text with pdftotext.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">I have a large single page PDF. When I drag to copy text in atril or okular or run pdftotext, it finds the text.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">pdffonts shows about 40 fonts. They are all similar:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New";color:black">name type encoding emb sub uni object ID</span><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New";color:black">------------------------------------ ----------------- ---------------- --- --- --- ---------</span><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New";color:black">HelveticaNeueLTStd-Roman--Identity-H CID Type 0C Identity-H yes no yes 214 0</span><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New";color:black">HelveticaNeueLTStd-BdIt--Identity-H CID Type 0C Identity-H yes no yes 236 0</span><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New";color:black">...</span><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New";color:black">HelveticaLTStd-Bold--Identity-H CID Type 0C Identity-H yes no yes 70 0</span><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New";color:black">Berkeley-Bold--Identity-H CID Type 0C Identity-H yes no yes 60 0</span><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New";color:black">pdfinfo shows</span><span style="font-size:12.0pt;color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New";color:black">ModDate: Fri Jun 26 21:27:37 2020 WEST<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New";color:black">Tagged: no<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New";color:black">UserProperties: no<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New";color:black">Suspects: no<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New";color:black">Form: none<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New";color:black">JavaScript: no<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New";color:black">Pages: 1<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New";color:black">Encrypted: no<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New";color:black">Page size: 702 x 1296 pts<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New";color:black">Page rot: 0<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New";color:black">File size: 13501736 bytes<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New";color:black">Optimized: no<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Courier New";color:black">PDF version: 1.6<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">When I run the PDF through pdftops, it subsets the fonts, and then when I convert it back into a PDF with ghostscript ps2pdf, the text shows, but copying it or running pdftotext does not work.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">The end of the generated ps is<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">%%+ font BHQHNF+MinionPro-Regular<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">%%+ font BHQHNG+Berkeley-Book<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">%%+ font BHQHNH+HelveticaLTStd-Bold<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">%%+ font BHQHNI+Berkeley-Bold<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">%%EOF<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">so it looks like pdftops is subsetting the fonts.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">"grep Berkeley-Bold", for example, shows<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">%%BeginResource: font BHQHNI+Berkeley-Bold<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">/CIDFontName /BHQHNI+Berkeley-Bold def<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">/F60_0 /BHQHNI+Berkeley-Bold 0 pdfMakeFont16L3<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">%%+ font BHQHNI+Berkeley-Bold<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">"grep -A 1 ' Tc$' x.ps | grep '(' | head" also appears to show that the fonts have been subsetted.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">(\000\025\000\014)<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">(\000\015\000\024)<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">(\000\001\000*)<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">(\000\002\000\003\000\012)<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">(\000\006\000\015)<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">(\000\014\000\017\000\005\000\007)<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">(\000\033\000\031)<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">(\000\013\000"\000"\000\026\000\022)<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">(\000\012\000\004)<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">(\000\024\000\023\000\017\000\001)<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">In testing, I also noticed that some pdftops options like -level3 generate ps files that crash ghostscript, but for now I think that is a ghostscript issue. <a href="https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbugs.ghostscript.com%2Fshow_bug.cgi%3Fid%3D702526&data=02%7C01%7Clrosenth%40adobe.com%7C62b37e7241c34165c04008d81d868ffb%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C0%7C637291811063868341&sdata=ECAy%2BgQSc3Apfa5IvH6JiSjYNFqSPYzG6F3tTBZRLVw%3D&reserved=0">https://bugs.ghostscript.com/show_bug.cgi?id=702526</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">The ghostscript bug report has a copy of the PDF.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">I can post this as a poppler bug report, but I wanted to check first that I didn't miss a pdftops option or that there wasn't an internal flag that I could expose as an option in pdftops.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black">William<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;color:black"><o:p> </o:p></span></p>
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